Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Kendall, T R"'
The goal of this paper is to present and analyse a new sample of cool carbon (C)stars located in the halo. Twenty three new C stars were discovered. Spectra are typical of N-type stars with C2 and CN bands and sometimes Halpha in emission. ... Four o
Externí odkaz:
http://arxiv.org/abs/0709.3000
Autor:
Kendall, T. R., Tamura, M., Tinney, C. G., Martin, E. L., Ishii, M., Pinfield, D. J., Lucas, P. W., Jones, H. R. A., Leggett, S. K., Dye, S., Hewett, P. C., Allard, F., Baraffe, I., Navascues, D. Barrado y, Carraro, G., Casewell, S. L., Chabrier, G., Chappelle, R. J., Clarke, F., Day-Jones, A., Deacon, N., Dobbie, P. D., Folkes, S., Hambly, N. C., Hodgkin, S. T., Nakajima, T., Jameson, R. F., Lodieu, N., Magazzu, A., McCaughrean, M. J., Pavlenko, Y. V., Tadashi, N., Osorio, M. R. Zapatero
We report on the first ultracool dwarf discoveries from the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey Early Data Release (LAS EDR), in particular the discovery of T dwarfs which are fainter and more distant than those found using the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702534
Autor:
Warren, S. J., Hambly, N. C., Dye, S., Almaini, O., Cross, N. J. G., Edge, A. C., Foucaud, S., Hewett, P. C., Hodgkin, S. T., Irwin, M. J., Jameson, R. F., Lawrence, A., Lucas, P. W., Adamson, A. J., Bandyopadhyay, R. M., Bryant, J., Collins, R. S., Davis, C. J., Dunlop, J. S., Emerson, J. P., Evans, D. W., Gonzales-Solares, E. A., Hirst, P., Jarvis, M. J., Kendall, T. R., Kerr, T. H., Leggett, S. K., Lewis, J. R., Mann, R. G., McLure, R. J., McMahon, R. G., Mortlock, D. J., Rawlings, M. G., Read, M. A., Riello, M., Simpson, C., Smith, D. J. B., Sutorius, E. T. W., Targett, T. A., Varricatt, W. P.
Publikováno v:
Mon.Not.Roy.Astron.Soc.372:1227-1252,2006; Mon.Not.Roy.Astron.Soc.375:213-226,2007
The First Data Release (DR1) of the UKIRT Infrared Deep Sky Survey (UKIDSS) took place on 2006 July 21. UKIDSS is a set of five large near-infrared surveys, covering a complementary range of areas, depths, and Galactic latitudes. DR1 is the first lar
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610191
Publikováno v:
Mon.Not.Roy.Astron.Soc.374:372,2007
We present first results from a deep (J = 18.7), wide-field (6.5 square degrees) infrared (ZYJHK) survey in the Upper Sco association conducted within the science verification phase of the UKIRT Infrared Deep Sky Survey Galactic Cluster Survey (GCS).
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610140
Autor:
Kendall, T. R., Jones, H. R. A., Pinfield, D. J., Pokorny, R. S., Folkes, S., Weights, D., Jenkins, J. S., Mauron, N.
Publikováno v:
Mon.Not.Roy.Astron.Soc.374:445-454,2007
We report the discovery of twenty-one hitherto unknown bright southern ultracool dwarfs with spectral types in the range M7 to L5.5, together with new observations of a further three late M dwarfs previously confirmed. Three more objects are already
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609396
Autor:
Pinfield, D. J., Jones, H. R. A., Lucas, P. W., Kendall, T. R., Folkes, S. L., Day-Jones, A. C., Chappelle, R. J., Steele, I. A.
Publikováno v:
Mon.Not.Roy.Astron.Soc.368:1281-1295,2006
Using a simulated disk brown dwarf (BD) population, we find that new large area infrared surveys are expected to identify enough BDs covering wide enough mass--age ranges to potentially measure the mass function down to ~0.03Mo, and the BD formation
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603320
Autor:
de Wit, W. J., Bouvier, J., Palla, F., Cuillandre, J. -C., James, D. J., Kendall, T. R., Lodieu, N., McCaughrean, M. J., Moraux, E., Randich, S., Testi, L.
We present a study of the young (30-100Myr) open cluster IC 4665 with the aim to determine the shape of the mass function well into the brown dwarf regime. We photometrically select 691 low-mass stellar and 94 brown dwarf candidate members over an ar
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511175
We present new results from an ongoing survey of carbon-rich asymptotic giant (AGB) stars in the halo of our Galaxy. After selecting candidates primarily through their 2MASS colours, slit spectroscopy was achieved at the ESO NTT telescope. Twenty-one
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506541
We report the first results of our ongoing campaign to discover the first brown dwarfs (BD) in NGC 2264, a young (3 Myr), populous star forming region for which our optical studies have revealed a very high density of potential candidates - 236 in $<
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501636
Autor:
Mauron, N., Kendall, T. R.
Publikováno v:
Astron.Astrophys. 428 (2004) 535-543
We present the results of an optical absorption study of NGC 7293, the Helix planetary nebula (PN), designed to search for diffuse band (DIB) absorptions perhaps arising in the carbon-rich circumstellar matter of the PN. We made high resolution spect
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409014